帮我翻译几个句子（中译英）

1. Business-to-Business Market for International Import and Export Companies

2. Business-to-Business Market for Domestic Trading Companies (of China)

3. Business-to-Customer Market Between End Consumers and Retailers

4. Solution Providers for Third-Party Online Payment

5. Management Software and Service Providers for Small-and-Medium Sized Companies

6. Information Service Portals for End Consumers

7. Living Service Portals for End Consumers

基础环境设施维护服务英语怎么翻译

environmental infrastructure maintenance service
基础设施有它的专有英文单词，像你在新闻中、网页上或者英文报纸杂志上看到的都应该是用infrastructure来表示，指为社会生产和居民生活提供公共服务的物质工程设施，用于保证国家或地区社会经济活动正常进行的公共服务系统。
希望能帮助到你，每天愉快！